This syndrome works by activating bits of DNA leftover from your distant ancestors. So... is Barclay a Human? The de-evolving effect turns him into a spider-like creature, yet Humans are not descended from spiders. Nor did cats evolve from Iguanas. And why does Picard begin to change into a Lemur, while Riker turned into a caveman?

Great Moment :

Barclay popping up in Engineering - made me jump a mile!

Body Count :

At least one Enterprise crewman killed. Possibly others.

Factoid :

This is the first (and only) episode directed by Gates McFadden, better known in front of the camera as Dr. Crusher.

Plotline

A virus makes the Enterprise crew start acting wild.

Analysis

Controversial episode that's good fun if you don't think about it too much.